Application of Rydberg atoms to quantum computing

Experimental aspects of an application of Rydberg atoms to quantum computing are studied. A single neutral atomtrapped in an antinode of the optical lattice can represent a quantum bit. Laser excitation of two atoms in neighboringantinodes allows for obtaining of quantum entanglement of the atoms via dipole-dipole interaction which is strong forhigh Rydberg states. A two-qubit operation could be realized in this way. The optimal values of a principal quantumnumber, an interatomic distance, time of a single two-qubit operation and other parameters have been estimated. Theestimates were done for 23Na and 87Rb atoms. Also experimental results of microwave spectroscopy of a few sodium